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    <title>Document</title>
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            <th colspan="3">时间</th>
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            <td rowspan="4">上午</td>
            <td>第一节课</td>
            <td>8:30~9:10</td>
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            <td>第二节课</td>
            <td>9:20~10:00</td>
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            <td>第二节课</td>
            <td>10：15~10:55</td>
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            <td>第三节课</td>
            <td>11：00~11:45</td>
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